mexlefirst_public:challenge_description_versuch-1 [MEXLE Wiki]

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===== Challenge description =====

An automotive engineer is testing the electrical system of a passenger car. The vehicle has a **12 V battery**, interior lighting, a temperature sensor, and a rear window heater. During vehicle development, the engineer must verify electrical components using resistance measurements, Ohm's law, series and parallel circuits, Kirchhoff's laws, and the behavior of a non-linear load.

Resistance is defined by voltage and current: \\
$$ R = \frac{U}{I} $$

A constant supply voltage is available for the experiment. This raises the following questions:

  * How will the different values of $U$ and $I$ influence $R$?
  * How can the set of nodes help to understand the current flow?
  * How will the voltage be affected from nonlinear resistors?

To answer these questions, different circuits are investigated: the Mesh-set, Set of nodes and a light bulb circuit for nonlinear resistors.